DATABASE DESIGN USING NORMALIZATION QUIZ

Read-only databases are ________ updated.

never

seldom

commonly

always

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When building a database from an existing set of tables, we may safely assume that referential integrity constraints have been enforced on the data we are given.

True

False

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In all cases, normalization into BCNF is desirable.

False

True

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We have normalized a table into BCNF if all candidate keys are determinants.

True

False

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When assessing the table structure of an acquired set of tables with data, counting the number of table rows is (part of) the:

third step.

fourth step.

first step.

second step.

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Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.

Three rows have the values Brown, NULL, and Blue in the same column.

Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.

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When assessing the table structure of an acquired set of tables with data, determining primary keys is (part of) the:

first step.

fourth step.

third step.

second step.

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When assessing the table structure of an acquired set of tables with data, determining functional dependencies is (part of) the:

second step.

fourth step.

first step.

third step.

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We use the SQL construct COUNT(*) to count the number of rows in a table.

False

True

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Most of the time, modification anomalies are serious enough that tables should be normalized into:

1NF.

BCNF.

2NF.

3NF.

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